2015 MERCEDES-BENZ GLA-Class tire pressure reset

Kilopascal (kPa) (definition) ........... 346
Labeling (overview) ........................ 341
Load bearing index (definition) ...... 347
Load index .....................................3
44
Load index (definition) ................... 346
M+S tires ....................................... 326
Maximum loaded vehicle weight
(definition) ..................................... 346
Maximum load on a tire (defini-
tion) ............................................... 346
Maximum permissible tire pres-
sure (definition) ............................ .346
Maximum tire load ......................... 339
Maximum tire load (definition) ....... 346
MOExtended tires .......................... 326
Optional equipment weight (defi-
nition) ............................................ 347
PSI (pounds per square inch) (def-
inition) .......................................... .346
Replacing ....................................... 348
Service life ..................................... 326
Sidewall (definition) ....................... 347
Snow chains .................................. 327
Speed rating (definition) ................ 346
Storing .......................................... .348
Structure and characteristics
(definition) ..................................... 345
Summer tires ................................. 167
Summer tires in winter .................. 326
Temperature .................................. 341
TIN (Tire Identification Number)
(definition) ..................................... 347
Tire bead (definition) ..................... .347
Tire pressure (definition) ................ 347
Tire pressures (recommended) ...... 345
Tire size (data) ............................... 352
Tire size designation, load-bearing capacity, speed rating .................... 342
Tire tread ....................................... 325
Tire tread (definition) ..................... 347
Total load limit (definition) ............. 347
Traction ......................................... 340
Traction (definition) ....................... 347
Tread wea r..................................... 340
Uniform Tire Quality Grading
Standards ...................................... 340
Uniform Tire Quality Grading
Standards (definition) .................... 345 Wear indicator (definition) ............. 347
Wheel and tire combination ........... 354
Wheel rim (definition) .................... 345
see Flat tire
Tool
see Vehicle tool kit
Top Tether ............................................ 61
Towing away Important safety guidelines ........... 317
Installing the towing eye ................ 318
Notes for 4MATIC vehicles ............ 320
Removing the towing eye ............... 319
Transporting the vehicle ................ 320
With both axles on the ground ....... 319
With front axle raised ..................... 319
Tow-starting
Emergency engine starting ............ 320
Important safety notes .................. 317
Installing the towing eye ................ 318
Removing the towing eye ............... 319
Traction system
see ETS/4ETS (Electronic Trac-
tion System)
Transmission
see Automatic transmission
Transmission position display ......... 149
Transporting the vehicle .................. 320
Traveling uphill Brow of hill ..................................... 171
Driving downhill ............................. 171
Maximum gradient-climbing capa-
bility ............................................... 171
Trim pieces (cleaning instruc-
tions) .................................................. 303
Trip computer (on-board com-
puter) .................................................. 207
Trip odometer Calling up ....................................... 207
Resetting (on-board computer) ...... 208
see Trip odometer
Trunk
see Cargo compartment
see Tailgate
Trunk load (maximum) ...................... 368
Turn signals Changing bulbs (front) ................... 119
Changing bulbs (rear) .................... 120 20
Index

Apart from driving style, consumption is
dependent on many factors such as, e.g.:
R load
R tire pressure
R cold start
R choice of route
R electrical consumers switched on
These factors are not included in the ECO dis-
play.
The evaluation of your driving style is carried
out using the following three categories:
R Acceleration
Acceleration (evaluation of all accelera-
tion processes):
- The bar fills up: moderate acceleration,
especially at higher speeds
- The bar empties: sporty acceleration
R Constant
Constant (assessment of driving behavior
at all times):
- The bar fills up: constant speed and
avoidance of unnecessary acceleration
and deceleration
- The bar empties: fluctuations in speed
R Coasting Coasting (assessment of all deceleration
processes):
- The bar fills up: anticipatory driving,
keeping your distance and early release
of the accelerator. The vehicle can coast
without use of the brakes.
- The bar empties: frequent braking
i An economical driving style specially
requires driving at moderate engine
speeds.
To achieve a higher value in the categories
Acceleration
Acceleration andConstant Constant:
R observe the gearshift recommendations.
R drive in drive program E.
i On long journeys at a constant speed, e.g.
on the highway, only the bar for Constant
Constant
will change.
i The ECO display summarizes the driving
characteristics from the start of the journey
to its completion. For this reason, the bars change dynamically at the beginning of the
journey. On longer journeys, there are
fewer changes. For more dynamic changes, carry out a manual reset.
For further information on the ECO display,
see (Y page 208). Braking
Important safety notes G
WARNING
If you shift down on a slippery road surface in an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface.
Downhill gradients !
On long and steep gradients, you must
reduce the load on the brakes by shifting to
a lower gear in good time. This allows you to
take advantage of the engine's braking
effect. For this, you need to have selected
manual drive program M. This helps you to
avoid overheating the brakes and wearing
them out excessively.
When you take advantage of the engine's
braking effect, a drive wheel may not turn
for some time, e.g. on a slippery road sur-
face. This could cause damage to the drive train. This type of damage is not covered bythe Mercedes-Benz warranty.
i Briefly depressing the accelerator pedal
on downhill gradients while the manual
drive program Mis temporarily activated:
the automatic transmission may switch to
the last active automatic drive program Eor
S. The automatic transmission may shift to
a higher gear. This can reduce the engine's braking effect. 164
Driving tipsDriving an
d parking

Example: tire pressure table with tire dimensions
Some tire pressure tables show only the rim
diameters instead of the full tire size, e.g.
R18 . Rim diameter is part of the tire size and
can be found on the tire sidewall
(Y page 342). If the tire pressures have been set to the
lower values for lighter loads and/or lower
road speeds, the pressures should be reset to
the higher values:
R if you want to drive with an increased load
and/or
R if you want to drive at higher road speeds
i The tire pressures for increased loads
and/or higher road speeds, shown in the
tire pressure table, may have a negative
effect on driving comfort.
If the tire pressure is not set correctly, this
can lead to an excessive build up of heat and
a sudden loss of pressure.
For more information, contact a qualified spe- cialist workshop. Important notes on tire pressure
G
WARNING
If the tire pressure drops repeatedly, the
wheel, valve or tire may be damaged. Tire
pressure that is too low may result in a tire
blow-out. There is a risk of an accident. R Check the tire for foreign objects.
R Check whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage, con-
tact a qualified specialist workshop. G
WARNING
If you fit unsuitable accessories onto tire
valves, the tire valves may be overloaded and malfunction, which can cause tire pressure
loss. Due to their design, retrofitted tire pres- sure monitors keep the tire valve open. This
can also result in tire pressure loss. There is a
risk of an accident.
Only screw the standard valve cap or other
valve caps approved by Mercedes-Benz for
your vehicle onto the tire valve.
Use a suitable pressure gauge to check the
tire pressure. The outer appearance of a tire
does not permit any reliable conclusion about the tire pressure.
The tire temperature and pressure increase
when the vehicle is in motion. This is depend-
ent on the driving speed and the load.
Therefore, you should only correct tire pres-
sures when the tires are cold.
The tires are cold:
R if the vehicle has been parked without
direct sunlight on the tires for at least three
hours and
R if the vehicle has not been driven further
than 1 mile (1.6 km)
The tire temperature changes depending on
the outside temperature, the vehicle speed
and the tire load. If the tire temperature
changes by 18 ‡ (10 †), the tire pressure
changes by approximately 10 kPa (0.1 bar/
1.5 psi). Take this into account when check- Tire pressure
329Wheels and tires Z